The Remnant

How big is the worldwide church? It may be a lot smaller than it appears.
Throughout redemptive history, there have been intervals where the actual body of believers were a distinct minority within the larger, visible body. It was true in Christ's day. It was true in Elijah's as well. It was true throughout most of the Old Testament. And the Bible had a word to describe this (smaller) minority of faithful believers – it called them the 'remnant.' Is there a 'remnant' now?